Top Definition
When the car in front of you cleans their windscreen with the backsplash getting yours, causing you to clean your windscreen, which sends backsplash to the car behind and so on, creating a waterfall down the whole outside lane of the M1.
Submitted by: [redacted] Contributor Record Sealed · 10 November 2018
verified Dr. J. Marston · TML/F-217 · clerk R.O.M.
Public Endorsement
0
filed in Vol. I, drawer 1, shelf 5
See also TML-1785 (q.v.)